CN218564128U

CN218564128U - Pier bottom expansion bolt with strong bearing capacity

Info

Publication number: CN218564128U
Application number: CN202223099634.6U
Authority: CN
Inventors: 石鸿儒; 石中玉; 石中华
Original assignee: Quzhou Shiyu Anchoring Technology Co ltd
Current assignee: Quzhou Shiyu Anchoring Technology Co ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-03-03
Anticipated expiration: 2032-11-22

Abstract

The utility model belongs to the technical field of the expansion bolt, concretely relates to pier bottom expansion bolt with strong bearing capacity, solves the problem of weak bearing capacity in the prior art, and comprises an expansion bolt, a taper head and a positioning rod, wherein the expansion bolt comprises an integrally formed screw thread part, a connecting part and a deformation part, a notch is arranged on the deformation part, symmetrically arranged alloy nails are fixedly arranged on the outer peripheral surface of the deformation part, and a plurality of first sawteeth which are distributed in an array and at equal intervals are fixedly arranged on two sides of the inner wall of the notch; the both sides of tapering head all fixed be provided with a sawtooth phase-match just are array equidistance distribution's sawtooth two, through the setting of sawtooth I, sawtooth class structure, with the first cooperation of tapering after the bolt knocks into the wall, utilize a plurality of sawtooth I and sawtooth two to make both sides firm inseparable, therefore make the expansion bolt holistic intensity promote greatly, be difficult for receiving vibrations to drag etc. and drop, and then make it have powerful bearing capacity.

Description

Pier bottom expansion bolt with strong bearing capacity

Technical Field

The utility model relates to an expansion bolt technical field specifically is a pier bottom expansion bolt that bearing capacity is strong.

Background

At present, the fixing principle of the expansion screw is as follows: the fixation of the expansion screw is achieved by utilizing the wedge-shaped slope to promote the expansion to generate friction bond force. One end of the screw is a thread, and the other end of the screw has a taper. The steel sheet is covered on the outer surface, a plurality of cuts are arranged on one half of the iron sheet cylinder, the steel sheet cylinder and the cuts are plugged into a hole drilled on a wall together, then a nut is locked, the nut pulls a screw outwards to pull the taper into the steel sheet cylinder, the steel sheet cylinder is expanded and then is tightly fixed on the wall, and the steel sheet cylinder is generally used for fastening protective guards, awning, air conditioners and the like on materials such as cement, bricks and the like. However, its fixation is not very reliable and may come loose if the load is subjected to large shocks, so that it is not recommended to install ceiling fans or the like. The expansion bolt is driven into a hole on the ground or the wall surface, a nut on the expansion bolt is screwed by a wrench, the bolt moves outwards, the metal sleeve outside is fixed, and then the metal sleeve is expanded by a big head at the bottom of the bolt to fully expand the whole hole, and at the moment, the expansion bolt cannot be drawn out.

In the prior art, if the publication authorization number is CN211231195U, named as expansion bolt, the sleeve of the expansion bolt is placed in the mounting hole, the external thread at the head of the sleeve is exposed out of the mounting hole, after the pin rod is knocked into the sleeve, the pin rod moves towards the direction of the second tube cavity wall to prop open the second tube cavity wall to abut against the mounting hole, and the sleeve is fixed on the wall; then hanging the object to be installed on the outer wall of the part of the sleeve extending out of the wall, and fixing the object to be installed by using a nut; through the special design of the structures of the sleeve and the pin rod and the matching installation relation among the sleeve, the pin rod and the nut, the installation process is simple and stable, and the flatness and the attractiveness of the head of the expansion bolt after installation are guaranteed.

The sleeve pipe is more obvious in deformation after being extruded by the hand pin rod and more firm in fixation, and friction force is not large enough due to the fact that the sleeve pipe is a smooth surface between the hand pin rod and the sleeve pipe, but the sleeve pipe still drops when being dragged by strong vibration, so that the whole bearing capacity is weaker.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide a pier bottom expansion bolt that bearing capacity is strong, solved the weak problem of bearing capacity.

In order to solve the technical problem, the utility model provides a following technical scheme: a pier bottom expansion bolt with strong bearing capacity comprises an expansion bolt, a taper head and a positioning rod, wherein the expansion bolt consists of a threaded part, a connecting part and a deformation part which are integrally formed, a notch is formed in the deformation part, alloy nails which are symmetrically arranged are fixedly arranged on the outer peripheral surface of the deformation part, and a plurality of first sawteeth which are distributed in an array and at equal intervals are fixedly arranged on two sides of the inner wall of the notch;

the both sides of tapering head all fixed be provided with sawtooth phase-match just are array equidistance two that distribute, the inside of tapering head has still been seted up and has been run through self and be used for the through-hole that the locating lever passed.

Preferably, a sliding hole communicated with the notch is formed in the connecting part, and rectangular side grooves are formed in two sides of the inner wall of the sliding hole;

the end part of the positioning rod is provided with positioning blocks which are integrally formed and symmetrically arranged.

Preferably, one end of the taper head is provided with symmetrically arranged ball grooves, the outer peripheral surface of the positioning rod close to one end of the positioning rod is provided with symmetrically arranged locking blocks in a sliding mode, and one side of each locking block is provided with steel balls corresponding to the ball grooves in a sliding mode.

Preferably, one side of the locking piece is inclined.

Preferably, the two sides of the positioning rod, which are close to one end of the positioning rod, are provided with grooves, the locking block is in sliding connection with the grooves, and springs I are fixedly connected between the locking block and the grooves.

Preferably, an inner groove is formed in one side of the locking block, a small hole is formed in the steel ball, and a second spring is fixedly connected between the side wall of the inner groove and the small hole.

Preferably, the first plurality of sawteeth and the deformation part are of an integrally formed structure, and the second plurality of sawteeth and the taper head are of an integrally formed structure.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses a setting of structures such as sawtooth one, sawtooth, cooperating with the taper head after the bolt knocks into the wall, utilize a plurality of sawtooth one and sawtooth two to make both sides firm inseparable, therefore make the inflation tie holistic intensity promote greatly, be difficult for receiving vibrations and drag etc. and drop, and then make it have powerful bearing capacity.

2. The utility model discloses a setting of locating lever, slide opening, locating piece and ball groove isotructure has adopted the cooperation of locating lever for can accurately aim at with expansion bolts after the tapering head inserts, fix a position accurately height, avoided misoperation and lead to inefficacy fixed.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a front sectional view of the present invention;

fig. 3 is a cross-sectional view of the taper head of the present invention;

FIG. 4 is an enlarged view of the utility model at the position marked with the number A;

fig. 5 is a schematic structural view of the middle positioning rod of the present invention.

Reference numbers in the figures:

1. an expansion bolt; 11. a threaded portion; 12. a connecting portion; 13. a slide hole; 14. a side groove; 2. a recess; 3. alloy nails; 4. a first sawtooth; 5. a taper head; 51. a through hole; 52. a ball groove; 6. positioning a rod; 61. positioning blocks; 62. a groove; 63. a first spring; 64. an inner tank; 65. a second spring; 66. steel balls; 67. a locking block; 7. and a second sawtooth.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, a pier bottom expansion bolt with strong bearing capacity comprises an expansion bolt 1, a taper head 5 and a positioning rod 6, wherein the expansion bolt 1 consists of a thread part 11, a connecting part 12 and a deformation part which are integrally formed, a notch 2 is formed in the deformation part, alloy nails 3 which are symmetrically arranged are fixedly arranged on the outer peripheral surface of the deformation part, and a plurality of saw teeth one 4 which are distributed in an array and at equal intervals are fixedly arranged on two sides of the inner wall of the notch 2; the both sides of tapering head 5 are all fixed be provided with sawtooth 4 phase-matchs and be two 7 of sawtooth that the array equidistance distributes, the inside of tapering head 5 still is seted up and is run through self and be used for the through-hole 51 that locating lever 6 passed, through sawtooth 4, the setting of two 7 isotructures of sawtooth, after the bolt is knocked into the wall with the first 5 cooperations of tapering, utilize a plurality of sawtooth 4 and two 7 to make the firm inseparable in both sides, therefore make the inflation bolt holistic intensity promote greatly, be difficult for receiving vibrations and drag etc. and drop, and then make it have powerful bearing capacity.

Referring to fig. 2, a slide hole 13 communicated with the notch 2 is formed inside the connecting portion 12, and rectangular side grooves 14 are formed on both sides of an inner wall of the slide hole 13; the tip of locating lever 6 is provided with integrated into one piece and symmetrical arrangement's locating piece 61, and through the setting of locating lever 6, slide opening 13, locating piece 61 and ball groove 52 isotructure, adopted locating lever 6's cooperation for can be accurate after taper head 5 inserts with expansion bolts 1 is accurate, and the location is accurate high, has avoided misoperation and has leaded to invalid fixed.

Referring to fig. 4, one end of the taper head 5 is provided with symmetrically arranged ball grooves 52, the outer circumferential surface of the positioning rod 6 near one end thereof is slidably assembled with symmetrically arranged locking blocks 67, and one side of the locking block 67 is slidably assembled with steel balls 66 corresponding to the ball grooves 52.

Referring to fig. 4, one side of the locking piece 67 is inclined.

Referring to fig. 4, two sides of the positioning rod 6 near one end thereof are both provided with a groove 62, the locking piece 67 is slidably connected with the groove 62, and a first spring 63 is fixedly connected between the locking piece 67 and the groove 62.

Referring to fig. 4, an inner groove 64 is formed on one side of the locking piece 67, a small hole is formed on the steel ball 66, and a second spring 65 is fixedly connected between the side wall of the inner groove 64 and the small hole.

Referring to fig. 1, the first plurality of teeth 4 are integrally formed with the deformation portion, and the second plurality of teeth 7 are integrally formed with the taper head 5.

The utility model discloses specific implementation process as follows: when the positioning rod is used, the positioning rod 6 is inserted from one end of the taper head 5, the taper head 5 extrudes the locking block 67 with one inclined side, the locking block 67 is accommodated in the groove 62 and completely penetrates through the rear locking block 67 to be ejected out, meanwhile, the steel ball 66 is embedded into the ball groove 52 to position the taper head 5, then, the taper head 5 is placed into a hole groove to be fixed, then, the expansion bolt 1 is sleeved on the hole groove, and the positioning block 61 and the side groove 14 on the side wall of the sliding hole 13 are positioned to align the first sawtooth 4 and the second sawtooth 7;

further, then strike expansion bolts 1's tip, deformation portion expands along with the extrusion extension of tapering head 5, connecting portion 12 covers and gives in 6 external stable of locating lever, the effect of supplementary broken wall can be played to the alloy nail 3 in the outside, more make things convenient for personnel's operation, final deformation portion is crowded to be opened, a plurality of sawtooth 4 and two 7 mutual chucking of sawtooth, and make deformation portion steadily fix among the hole groove, stronger bearing capacity has, can adopt this bolt to install the article afterwards.

The above-mentioned only be the embodiment of the present invention, not consequently the restriction of the patent scope of the present invention, all utilize the equivalent structure or equivalent flow transform made of the content of the specification and the attached drawings, or directly or indirectly use in other relevant technical fields, all including in the same way the patent protection scope of the present invention.

Claims

1. The utility model provides a pier bottom expansion bolt that bearing capacity is strong, includes expansion bolts (1), tapering head (5) and locating lever (6), its characterized in that: the expansion bolt (1) is composed of a thread part (11), a connecting part (12) and a deformation part which are integrally formed, a notch (2) is formed in the deformation part, alloy nails (3) which are symmetrically arranged are fixedly arranged on the outer peripheral surface of the deformation part, and a plurality of saw teeth I (4) which are distributed in an array and at equal intervals are fixedly arranged on two sides of the inner wall of the notch (2);

the both sides of tapering head (5) all fixed be provided with sawtooth (4) phase-match just are two (7) of sawtooth that the array equidistance distributes, the inside of tapering head (5) has still been seted up and has been run through self and be used for through-hole (51) that locating lever (6) passed.

2. The high load bearing capacity pier bottom expansion bolt of claim 1, wherein: a sliding hole (13) communicated with the notch (2) is formed in the connecting part (12), and rectangular side grooves (14) are formed in two sides of the inner wall of the sliding hole (13);

the end part of the positioning rod (6) is provided with positioning blocks (61) which are integrally formed and symmetrically arranged.

3. The high load bearing capacity pier bottom expansion bolt of claim 1, wherein: one end of the taper head (5) is provided with symmetrically arranged ball grooves (52), the outer peripheral surface of the positioning rod (6) close to one end of the positioning rod is provided with symmetrically arranged locking blocks (67) in a sliding mode, and one side of each locking block (67) is provided with steel balls (66) corresponding to the ball grooves (52) in a sliding mode.

4. The high load bearing capacity pier bottom expansion bolt of claim 3, wherein: one side of the locking block (67) is inclined.

5. The high load bearing capacity pier bottom expansion bolt of claim 3, wherein: the locating rod (6) is close to both sides of its one end and all has seted up recess (62), locking piece (67) with recess (62) sliding connection, locking piece (67) with fixedly connected with spring (63) between recess (62).

6. The high load bearing capacity pier bottom expansion bolt of claim 3, wherein: an inner groove (64) is formed in one side of the locking block (67), a small hole is formed in the steel ball (66), and a second spring (65) is fixedly connected between the side wall of the inner groove (64) and the small hole.

7. The high load bearing capacity pier bottom expansion bolt of claim 1, wherein: a plurality of the first sawteeth (4) and the deformation part are of an integrally formed structure, and a plurality of the second sawteeth (7) and the taper head (5) are of an integrally formed structure.